Download or read book A Novel Dynamic Bandwidth Allocation Algorithm with QoS Support for EPON Access Networks written by Tianmin Fan and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Bandwidth Allocation Algorithms for Ethernet Pon written by Zhiwen Peng and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We can broadly classify today's access networks into two camps: wired and wireless access. Traditional wired access techniques include digital subscriber loop (DSL) and hybrid-fiber coax (HFC) networks. These techniques can generally support bandwidth in a range of several Mb/s and a maximal transmission distance up to several hundred meters. To support even higher bandwidth and longer transmission distances, a new generation of broadband fiber-based technique has now been standardized and developed over the years. EPON is one of the most promising fiber-based access techniques at this moment, which is expected to offer a cost-effective solution to broadband network access owing to the ubiquitous deployment of Ethernet-based network equipment. Compared with fiber-based access technology, wireless access technologies such as WiFi, WiMAX and LTE generally provide lower bandwidth for each user and support very short distance. EPON has proven to deliver the essential services of voice, video, and data communications reliably, while at the same time providing expected guarantees for the delivery of those services in terms of defined Quality of Service (QoS) measures.
Download or read book The Emerging WDM EPON written by Mirjana Radivojević and published by Springer. This book was released on 2017-05-11 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book proposes dynamic wavelength and bandwidth allocation (DWBA), a hybrid of time-division multiplexing (TDM) and wavelength-division multiplexing (WDM), which offers a solution for service providers faced with multiservice networks. It discusses different models, architectures and implementations and evaluates their performance.
Download or read book Dynamic Bandwidth Allocation in CDMA based Passive Optical Networks written by Bona Ater and published by . This book was released on 2014 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fiber to the home (FTTH) technology is an attractive solution for providing high bandwidth from the Central Office (CO) to residences and small-and medium-sized businesses. The emergence of Internet Protocol-based communication within households such as VoIP, IPTV, video conferencing, and high definition multimedia shows that there is a need for high-capacity networks that can handle differentiated services. By providing an optical fiber link to a household where the optical network unit (ONU) is located, there will be a tremendous increase in information capacity with respect to Digital Subscriber Line and cable modem technologies that are currently in place. In access networks, Passive Optical Networks (PON) are rapidly replacing copper-based technologies due to a wide range of benefits, one of which is having the capability to transmit data at a higher rate and reach further distances without signal degradation. Under the PON family of technologies, Ethernet PON (EPON) was developed and is specified in the IEEE 802.3 standard outlining the framework that can deliver voice, data, and video over a native Ethernet port to businesses and residential customers. An increasingly important subject to network operators is Quality of Service (QoS). Although the EPON specification provides mechanisms for supporting QoS, it does not specify or define an algorithm for providing QoS. Rather it is up to the CO to design and implement an appropriate algorithm to meet the specifications of services that are offered to their clients. Researchers have extensively studied bandwidth allocation in EPON where the challenge is to develop bandwidth allocation algorithms that can fairly redistribute bandwidth among ONUs based on their demand. These algorithms were developed for the uplink direction, from ONUs to CO, in a network where only a single ONU is permitted to transmit at a time. Another well-established PON technology is Optical Code-Division Multiple Access PON (OCDMA-PON). In recent years, it has become more economical due to hardware advancements and it has gained a lot of attention due to its benefits over EPON. The most attractive benefit of OCDMA-PON is that multiple ONUs may transmit to the CO simultaneously, depending on a number of constraints, whereas EPON is limited to a single ONU transmission at a time. In this thesis, we develop a dynamic bandwidth allocation algorithm called Multi-Class Credit-Based Packet Scheduler (MCBPS) for OCDMA-PON in the uplink direction that supports the Internet Protocol (IP) Differentiated Services and takes advantage of the simultaneous nature of OCDMA. The IP Differentiated Services specifications stipulate the following traffic classifications: Expedited Forwarding for low latency, low packet loss, and low jitter applications; Assured Forwarding for services that require low packet loss; and Best Effort which are not guaranteed any bandwidth commitments. MCBPS incorporates the use of credit pools and the concept of a credit bank system to provide the same services as EPON by assigning ONUs specific timeslots to transmit data and also by specifying the amount of bytes from each class. MCBPS is a central office based algorithm that provides global fairness between Quality of Service (QoS) classes while also ensuring that at any given moment the desired number of simultaneous transmissions is not exceeded. We demonstrate through simulation that MCBPS algorithm is applicable in both EPON and OCDMA-PON environments. An in-house simulation program written in the C programming language is used to evaluate the effectiveness of the proposed algorithm. The MCBPS algorithm was tested alongside a benchmark algorithm called Interleaved Polling with Adaptive Cycle Time (IPACT) algorithm to compare network throughput, average packet delay, maximum packet delay, and packet loss ratio. From the simulation results it was observed that MCBPS algorithm is able to satisfy the QoS requirements and its performance is comparable to IPACT where the simultaneous transmission is limited to one. The simulation results also show that as the number of simultaneous transmissions within the network increases, so does the bandwidth. The MCBPS algorithm is able to re-distribute the scaling bandwidth while ensuring that a single ONU or QoS class does not monopolize all the available bandwidth. In doing so, through simulation results, as the simultaneous transmissions increases, the average packet delay decreases and the packet loss ratio improves."-- from abstract.
Download or read book Ethernet passive optical networks performance optimization An extensive comparative study for DBA algorithms written by Mohamed Maher and published by GRIN Verlag. This book was released on 2021-09-01 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2021 in the subject Engineering - Communication Technology, grade: 3.3, , course: Optical Fibers, language: English, abstract: This thesis provides a detailed comparison and a classification study for a large number of DBA algorithms with respect to time delay and throughput as performance indicators. The study shows that IPACT WITH CBR, UDBA, IPACT with two stages and CPBA are the optimum DBA algorithms regarding both time delay and throughput at highly loaded scenarios. Dynamic bandwidth allocation in Ethernet passive optical networks (EPON) presents a key issue for providing efficient and fair utilization of the EPON upstream bandwidth while supporting the quality of service QoS requirements of different traffic classes. Rare literatures have addressed a qualitative and quantitative comparison of large numbers of DBA algorithms based on their performance indicators. These algorithms are enrolled in a parametric optimization process targeting performance enhancement at highly loaded scenarios this increasing upstream line rates, changing distance between the OLT (Optical Line Terminal) and ONU (Optical Network Unit), increasing size of an Ethernet packet and changing maximum cycle time to 1 ms and altering guard time value). This process reduces time delay around 3.5% for IPACT WITH CBR, 1.725% for UDBA, 1.167% for IPACT with two stages and (1.167% for CPBA. Also, the optimization increases the throughput by 1.3% for IPACT WITH CBR, 1.795% in UDBA, 2.5% for IPACT with two stages and 1.684% for CPBA.
Download or read book Ethernet Passive Optical Networks written by Glen Kramer and published by McGraw Hill Professional. This book was released on 2005-03-22 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ethernet Passive Optical Networks is the IEEE's (Institute of Electrical and Electronics Engineers) approved architecture of choice for the next generation of broadband access. Written by an author of the IEEE 802.3ah standard, this is the first book to explain the EPON architecture, analyze its performance, and annotate the standard. For any engineer or graduate student building equipment for broadband access or service provider offering such service, this will serve as the "authorized" guide to EPON.
Download or read book Access Networks written by Xiao Jun Hei and published by Springer. This book was released on 2010-02-09 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid growth of the Internet as well as the increasing demand for broadband services, access networks have been receiving growing investments in recent years. This has led to a massive network deployment with the goal of eliminating the ba- width bottleneck between end-users and the network core. Today many diverse te- nologies are being used to provide broadband access to end users. The architecture and performance of the access segment (local loop, wired and wireless access n- works, and even home networks) are getting increasing attention for ensuring quality of service of diverse broadband applications. Moreover, most access lines will no longer terminate on a single device, thus leading to the necessity of having a home network designed for applications that transcend simple Internet access sharing among multiple personal computers and enable multimedia support. Therefore, the access network and its home portion have become a hot investment pool from both a fin- cial as well as a research perspective. The aim of the annual International Conference on Access Networks (AccessNets) is to provide a forum that brings together scientists and researchers from academia as well as managers and engineers from the industry and government organizations to meet and exchange ideas and recent work on all aspects of access networks and how they integrate with their in-home counterparts. After Athens in 2006, Ottawa in 2007, and Las Vegas in 2008, this year AccessNets moved to Asia for the first time.
Download or read book Next Generation FTTH Passive Optical Networks written by Josep Prat and published by Springer Science & Business Media. This book was released on 2008-07-16 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre-to-the-Home networks constitute a fundamental telecom segment with the required potential to match the huge capacity of transport networks with the new user communication demands. Huge investments in access network infrastructure are expected for the next decade, with many initiatives already launched around the globe recently, driven by the new broadband service demands and the necessity by operators to deploy a future-proof infrastructure in the field. Dense FTTH Passive Optical Networks (PONs) is a cost-efficient way to build fibre access, and international standards (G/E-PON) have been already launched, leading to new set of telecom products for mass deployment. However, these systems only make use of less than 1% of the optical bandwidth; thus, relevant research is taking place to maximize the capacity of these systems, with the latest opto-electronic technologies, demonstrating that the huge bandwidth available through the fibre access can be exploited in a cost-efficient and reliable manner. Next-Generation FTTH Passive Optical Networks gathers and analyzes the most relevant techniques developed recently on technologies for the next generation FTTH networks, trying to answer the question: what’s after G/E-PONs?
Download or read book FiWi Access Networks written by Martin Maier and published by Cambridge University Press. This book was released on 2011-12-15 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of broadband access networks toward bimodal fiber-wireless (FiWi) access networks, described in this book, may be viewed as the endgame of broadband access. After discussing the economic impact of broadband access and current worldwide deployment statistics, all the major legacy wireline and wireless broadband access technologies are reviewed. State-of-the-art GPON and EPON fiber access networks are described, including their migration to next-generation systems such as OCDMA and OFDMA PONs. The latest developments of wireless access networks are covered, including VHT WLAN, Gigabit WiMAX, LTE and WMN. The advantages of FiWi access networks are demonstrated by applying powerful network coding, heterogeneous optical and wireless protection, hierarchical frame aggregation, hybrid routing and QoS continuity techniques across the optical-wireless interface. The book is an essential reference for anyone working on optical fiber access networks, wireless access networks or converged FiWi systems.
Download or read book New Dynamic Bandwidth Allocation Algorithm Analysis written by Paola Garfias Hernández and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QoS aware Two level Dynamic Bandwidth Allocation Algorithms in IEEE 802 16j enabled Vehicular Networks written by Ridong Fei and published by . This book was released on 2010 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Broadband Access Networks written by Abdallah Shami and published by Springer Science & Business Media. This book was released on 2010-01-23 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considering the key evolutions within the access network technologies as well as the unprecedented levels of bandwidth demands by end users, this book condenses the relentless research, design, and deployment experience of state-of-the-art access networks. Furthermore, it shares the critical steps and details of the developments and deployment of these emergent technologies; which is very crucial particularly as telecommunications vendors and carriers are looking for cost-effective ultra-broadband “last-mile” access solutions to stay competitive in the “post bubble” era. The book is written to provide a comprehensive overview of the major broadband access technologies and deployments involving internationally recognized authors and key players. Due to its scope and depth, the proposed book is able to fill an important gap of today’s available literature.
Download or read book Intelligent Control and Computer Engineering written by Sio-Iong Ao and published by Springer Science & Business Media. This book was released on 2010-12-07 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large international conference on Advances in Intelligent Control and Computer Engineering was held in Hong Kong, March 17-19, 2010, under the auspices of the International MultiConference of Engineers and Computer Scientists (IMECS 2010). The IMECS is organized by the International Association of Engineers (IAENG). Intelligent Control and Computer Engineering contains 25 revised and extended research articles written by prominent researchers participating in the conference. Topics covered include artificial intelligence, control engineering, decision supporting systems, automated planning, automation systems, systems identification, modelling and simulation, communication systems, signal processing, and industrial applications. Intelligent Control and Computer Engineering offers the state of the art of tremendous advances in intelligent control and computer engineering and also serves as an excellent reference text for researchers and graduate students, working on intelligent control and computer engineering.
Download or read book Convergence of Mobile and Stationary Next Generation Networks written by Krzysztof Iniewski and published by John Wiley & Sons. This book was released on 2011-03-16 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Only Resource to Cover Wireless, Wireline, and Optical Networks in One Volume Mobile and stationary next-generation networks that access the photonic core are destined to become as ubiquitous as traditional telephone networks. These networks must efficiently provide adequate network quality to multimedia applications with high bandwidth and strict quality-of-service requirements, as well as seamlessly integrate mobile and fixed architectures. Today's engineering students must be properly prepared to meet the challenges of next-generation network development and deployment. Featuring contributions from top industrial experts and academic professors, this authoritative work provides a comprehensive introduction to next-generation networks. It explains wireless networks such as wireless local area networks (WLAN), wireless personal area networks (WPAN), wireless access, 3G/4G cellular, and RF transmission, as well as optical networks like long-haul and metropolitan networks, optical fiber, photonic devices, and VLSI chips. Rather than focusing on heavy math or physical details, this resource explores how the technology is being used. It describes access and transport network layer technologies while also discussing the network and services aspects. Chapter coverage includes: Fiber–wireless networks: technologies, architectures, and future challenges Packet backhaul network Point-to-point microwave backhaul Fourth-generation broadband: paving the road to Gbit/s with copper Dynamic bandwidth allocation in EPON and GPON Next-generation ethernet passive optical networks: 10G-EPON Power line communications and smart grids Signaling for multimedia conferencing in 4G: architecture, evaluation, and issues Self-coexistence and security in cognitive radio networks Mobile WiMAX UWB personal area networks—MIMO extensions Next-generation integrated metropolitan-access network: technology integration and wireless convergence Resilient burst ring: a novel technology for the next-generation metropolitan area networks Filled with illustrations and practical examples from industry, this book will be invaluable to engineers and researchers in industry and academia, as well as senior undergraduate and graduate students, marketing and management staff, photonics physicists, and chip designers.
Download or read book Access Networks written by Robert Szabó and published by Springer Science & Business Media. This book was released on 2011-05-13 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This year's main conference focused on next-generation wireless and wired broadband networks, sensor networks and emerging applications related to access networks. The main conference received 23 submissions from 15 different countries. After a thorough review process, 9 papers were accepted from the open call, one distinguished researcher was invited to contribute an invited paper and one was invited for a post-deadline submission, yielding 11 technical papers altogether. The 11 technical papers were organized into 4 technical sessions. In addition, four posters were allocated for a poster session during the conference. Within the main program of the conference, two keynote speeches addressed hot topics on emerging trends and focus areas for access networks. The first keynote by Jens Malmodin from Ericsson addressed the energy and carbon footprint of ICT and media services and the second keynote by Peter Szilagyi, Nokia Siemens Networks, addressed self-organizing networks. Collocated together with the main conference of AccessNets 2010 was the First International ICST Workshop on Autonomic Networking and Self-Management in Access Networks (SELFMAGICNETS 2010), which complemented the main conference program with focused coverage on theories and technologies of autonomic networking and self-management. -- from preface.
Download or read book Proceedings written by Yuanyuan Yang and published by IEEE Computer Society Press. This book was released on 2004 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FTTX Concepts and Applications written by Gerd Keiser and published by John Wiley & Sons. This book was released on 2006-02-06 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents fundamental passive optical network (PON) concepts, providing you with the tools needed to understand, design, and build these new access networks. The logical sequence of topics begins with the underlying principles and components of optical fiber communication technologies used in access networks. Next, the book progresses from descriptions of PON and fiber-to-the-X (FTTX) alternatives to their application to fiber-to-the-premises (FTTP) networks and, lastly, to essential measurement and testing procedures for network installation and maintenance. An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
